Zinsser Gardz


A unique water-based sealer for porous and potential problem surfaces. Gardz® is formulated to deeply penetrate and dry to a hard, moisture resistant film that seals and binds down porous, chalky and crumbling surfaces, paints and textured finishes.

Bulk Buy

£9.75 tax excl.

£11.70   tax incl.

Product Description

Gardz® is another high-performance interior-use product from Zinsser which every maintenance and project manager should have to hand. Like so many of Zinsser’s paints and coatings range, Gardz® is a specialist problem-solving product – a water-based sealer for porous surfaces. Formulated to deeply penetrate surfaces and substrates, Gardz® will dry to a hard and moisture resistant film, sealing and binding down porous, chalky and crumbling surfaces.

Recommended by Zinsser for use on damaged walls, failing paints and textured finishes, damaged or new drywall, spackling and joint compound skim coats, calcimine, uncoated wallpaper (see also Zinsser Wallpaper Cover-Up), lining paper, filler and wallcovering adhesive residue. Gardz® sealer can repair torn paper and remove bubbles from drywall. It seals old wallpaper adhesive and with food alkali resistant properties, Zinsser Gardz® can therefore be applied to high pH surfaces. To clean the application equipment, this water-based product simply requires soap and water.

Touch dry in 30 mins, or hard dry to a water-resistant finish in 3 hours, it is also recoatable in just 3 hours. As with other Zinsser products stocked at Rawlins Paints, this allows for maintenance and redecoration after repair work to be quick and easy, minimising downtime, VOCs and cost.

Gardz® dries to a clear finish and is not recommended to be, nor is it sold as a tintable product.

Features and benefits

• Repairs torn paper on damaged drywall, eliminating bubbles
• Protects and seals new plasterboard, ready for wallpapering or painting
• Designed for use on porous interior surfaces
• Seals old wallpaper adhesive, skim coats and filled areas
• Water-based, low odour, dries clear
• Dries fast to a hard, moisture-proof film
• Binds down chalky surfaces
• Can be applied to high-pH surfaces
• For use with brush, roller or spray
• Low odour formula
• Cleans up with soap and water
• Easy to apply and recoatable in just 3 hours

Please note: Errors and omissions excepted (E&OE). It is your responsibility to read all data sheets (available upon request) prior to application. The specification given above is our best recommendation from the information supplied and is given in good faith but without warranty. We recommend a trial area is coated to ensure the product meets your requirements.

It is your responsibility to read the Product Data Sheets (available below) before you place an order and prior to application of the product. The content of this website is our best recommendation and is not advice. Coverage rates quoted are approximate, you agree that coverage depends on the condition of the substrate, surface absorption, texture and application method. We ALWAYS recommend a trial area is coated to ensure the product meets your requirements before use.

Technical Data

Typical Coverage (per coat)5-10m² per litre
Touch Dry30 Mins
ApplicationBrush, Roller, Spray
The figures stated above are approximate. Please ensure you refer to all datasheets for full application information.


Customer agrees that before placing an Order, Customer has read and understood the most up to date Product Data Sheet for the Product. Where we have access to the Product Data Sheet from the manufacturer, we will either provide a copy on request, or include a link to the Product Data Sheet available on the manufacturer’s website. Customer further agrees that we have no liability for any errors or omissions contained within the Product Data Sheets. For more information, please see our Terms & Conditions of Sale.


questions Nick on 02/01/2017
Question: We have a problem internal wall. It was originally builtas an external wall late 18th/early 19th century of mixed north pennine stone with lime mortar. For about 45 years it has been used an an internal wall, covered with gypsum plaster and paint. In patches something causes any paint applied to bubble after about 6 months. Would this product help to solve the problem ?

Based on your description we would recommend using Zinsser AllCoat (Solvent-Based) and leave this as the finish. Zinsser AllCoat (Solvent-Based) is breathable and will let traces of moisture through the paint film without causing the coating to bubble up, it also has good resistance to high pH.

Zinsser Gardz would seal the substrate and could cause a build up of moisture behind the coating resulting in blisters forming over time.

questions Geraldine on 17/06/2016
Question: I have grease stains on my emulsion wall, can I use this as a blocker before reprinting?

Zinsser Gardz is not a stain blocker, you would need to clean the area well to remove as much grease as possible then apply Zinsser B-I-N

Best recommendations are to spot prime the stain, allow to dry for a minimum of 45mins before applying a full coat to the whole area or to a natural break, allow to dry for another 45mins and then apply your chosen decorative finish (paint or wallpaper).

questions muriel dyga on 11/02/2016

Can I paint over this with gloss paint or silk paint?


Nearly all conventional decorative finishes can be used over Zinsser Gardz including emulsions, wallpaper, solvent based primer, undercoat and gloss.

questions robert jones on 16/06/2015

Is Zinsser Gardz effective in stabilising distemper coated ceilings?


No, we don't recommend water based products to be used over distemper. We would recommend either Zinsser Grade 1 or Zinsser AllCoat (Solvent-Based).


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